Tool holder



' Match 23 1926.

F. G. JEFFRl-Es E'r AL TOOL HOLDER Filed April 9,'[1924 l I I l I |L tary shaft.

Patented Mar. 23, 1923.

UNITED STATES 'PATENT OFFICE. Y

FRANK G. JEFFRIES AND FREDERICK A. LAVEDAN, F COLLEGE POINT, NEW YORK.

TOOL HOLDER.

Application filed April 9, 1924. Serial No. 705,219.

T 0 ZZ whom t may concern:

Be it known that FRANK Gr. Jnrrnrns and l41 nnnnnrcii A. .LAvEDfim citizens of the United States, residing at College Point, in the county ot Queens and State ot New York, have invented certain new and useful Improvements in Tool Holders, ot which the following is a specification.

Our invention relates to a tool holder which is adapted to be connected to any rotary shaft, such as a lathe spindle, saw mandrel, drilling machine, electric motor shaft and the like, either horizontal or vertical.

One ot the objects ot the invention is to provide such a device to which can be attached a variety of tools such as emery wheels, butling wheels, saws, drill chucks and similar tools.

Referring to the drawing for a more complete disclosure of the invention:

Fig. 1 is a longitudinal section of the tool holdin attachment.

Figs. 2 and 3 are elevations showing special attachments for the drill chuck.

Figs. 1 and 5 are modifications ot one end ot the tool holding attachment.

The attachment comprises a spindle 1 and is made out of' one solid piece of stock and is provided with a bore 2 at one end, which can lit on either a cylindrical or tapered end Aof a rotary shaft. t the end of the rotaryT shaft is screw threaded, then the bore would be tapped to fit the same. For holding the attachment on therotary shatt, set screws 3 are provided. A hole 4t is provided which communicates with the bore. 2 to release compressed air formed in placing,` the attachment on the shaft. This hole can also be used for releasing the attachment by driving a tapered key into it and into Contact with the end el the ro- 'lhe attachment is provided with a reduced threaded portion 9 forming a flange 5, and a further reduced portion 6 provid ing a -flange 7. The portion G may be provided at its end with a tapered threaded portion 8. Instead ot' making the tapered thread 8 on the end of the attachment, the end may be made as shown in Figs. 4 and 5.

Mounted on the portion 9 of the attachment are clamps 10 and 11 for holding` emery wheels, buffs, saws and similar devices. The clamp 10 is keyed to the spindle Vportion 17 may be provided.

1 and the clamp 11 is loosely mounted thereon. n threaded engagement with the portion 9 is a nut 12 in contact Lwith the clamp 11 by means of which on screwing up the mit, the implement between the clamps is securely held in position, so as to rotate with the spindle.

A hutling wheel may be screwed onto the tapered threaded portion 8 of the spindle to rotate therewith. c5

When it is desired to use a drill chuck instead of a bulting wheel, the attachment shown in Figs. 2 and 3 may be used and which comprises a spindle 18 having a bore 14 adapted to fit over the portion 6 and be held in position thereon by the setv screw 15. At one end, there may be a threaded portion 16 for engaging the drill chuck or a tapered portion 17.

lnstead however or" a separable attachment for this purpose, the tapered end 8 for the bulting wheel kmay be dispensed with and a threaded portion 18 similar to portion 16 and a tapered portion 19 similar to From the above description it will be apparent that we have produced a device of the character specified, which possesses all the features enumerated as desirable, and while we have illustrated and described the preferred form of theinvention, it will be understood that we reserve the right to all changes properly falling within the spirit and scope of the appended claim.

r"heretorc, what we claim as new, and desire to secure by Letters Patent of the United States, is: f

A tool holder comprising a spindle made ot' a single piece of stock and provided with a bore at one end adapted to tit on the end ot a. rotary shai't, the said spindle being provided with a reduced threaded inter mediate portion forming thereby a flange with the main portion, and a further reduced threaded end portion, the said intermediate threaded portion adapted to engage a nut for clamping the rotary tool in position thereon against the said flange, the said reduced threaded end portion adapted to detachably engage another rotating tool.

In testimony whereof we atlix our signatures.

FRANK G. JEFFRIES. y FREDERICK A; LAVEDAN. 

